2021 Cadillac CT5

29 complaints on file, page 1 of 2.

1. Filed Sep 25, 2026Failure Sep 25, 2026Mechanicsburg, PAUnknown or other

   The Cadillac CT5 door handles are operated via a button instead of a typical pull style handle. The buttons fail regularly meaning you cannot open the specific door(s) where the button has failed. With small children in the car when this fails it poses a severe health and safety risk. There needs to be a recall issued for this well known and documented problem.

   NHTSA complaint 11766863
2. Filed Sep 24, 2026Failure Aug 4, 2026Savoy, TXPower train

   I am filing a formal safety complaint against General Motors (GM) regarding an unresolved transmission safety hazard on my 2021 Cadillac CT5 550T. This vehicle is included under NHTSA Campaign Number 25V148000 for an internal transmission control valve failure that can cause sudden, dangerous wheel lock-up while driving. My vehicle is currently experiencing an active, catastrophic failure of the transmission valve body. The vehicle has completely lost its reverse gear, shifts harshly, and exhibits Diagnostic Trouble Codes P0776 (Pressure Control Solenoid B Performance/Stuck Off) and P0700 (Transmission Control System Malfunction). These active fault codes and physical mechanical symptoms explicitly confirm a dangerous loss of hydraulic pressure directly resulting from the exact internal valve wear described in the federal recall. General Motors has issued Special Coverage Bulletin N242480631 to extend the warranty coverage on the physical transmission control valve body assembly to 15 years or 150,000 miles to address this exact defect. However, Cadillac Customer Assistance and the local dealership are refusing to pay for the required replacement component. They have denied coverage solely on the grounds that electronic fault code P0747 has not yet been registered by the computer, despite total mechanical failure of the component and a severe safety risk to the vehicle occupants. GM’s reliance on a singular electronic diagnostic code to trigger a safety-critical mechanical component replacement creates a severe hazard. It forces vehicle owners to drive an unstable, failing vehicle with sudden wheel-lock vulnerability while waiting for a secondary electronic flag to trip. I am requesting that the NHTSA review GM’s restrictive diagnostic criteria under Special Coverage N242480631, as it is being used to systematically deny repairs for vehicle owners actively suffering from the mechanical failures governed by Safety Recall 25V148000.

   NHTSA complaint 11766791
3. Filed Sep 21, 2026Failure Sep 14, 2026Old Bridge, NJElectrical system, Unknown or other

   I have experienced a serious and recurring safety issue with the door handles on my Cadillac CT5 vehicles. The exterior door handles have stopped working, preventing the doors from being opened normally. On one occasion, I was trying to get my child out of the back seat when the rear door handle failed and would not open. Because the child safety lock was engaged, my child was also unable to open the door from the inside. I had to climb through the vehicle and use another door to get my child out. This situation is especially concerning because, in an emergency such as a collision, fire, or other situation requiring immediate evacuation, a malfunctioning door handle combined with the child safety lock could prevent a child from exiting the vehicle and could significantly delay a parent or caregiver from getting them out. I have two Cadillac CT5 vehicles, and this same issue has occurred on both vehicles. I have also been told by Cadillac dealers that the door-handle failure is a known problem. Despite the recurring nature of the issue, I understand that Cadillac has not issued a recall for the door handles. Instead, individual door handles must reportedly be replaced every two to three years, with repair costs ranging from approximately $400 to $1,000 depending on the door. I believe this issue warrants serious attention because it involves a potential safety hazard, particularly when a child is secured in the back seat with the child safety lock engaged. A component that can prevent a vehicle door from being opened during an emergency should be reliable and durable, and recurring failures across multiple vehicles raise significant safety concerns.

   NHTSA complaint 11765920
4. Filed Sep 20, 2026Failure Sep 19, 2026Clarksville, TNElectrical system

   The exterior door handles on my 2021 Cadillac CT5 have experienced the same intermittent failure. The handles initially work intermittently and then become unable to release the door. The button on the inside of the door handle doesn't respond when pushed and that is the only way to get in the car without rolling the windows down or using the emergency key. I've seen many other forum posts about this so it seems to be a widespread issue across other models with the same electric door opener mechanism. This creates a serious safety concern for me because occupants may be unable to enter the vehicle normally, and emergency responders may be unable to access occupants through the affected doors. This appears to be a systemic defect affecting multiple CT5 vehicles, rather than an isolated component failure.

   NHTSA complaint 11765625
5. Filed Sep 17, 2026Failure Sep 1, 2026Brownsville, TXElectrical system

   Doors have routinely stopped opening using the electronic handles to pop open doors. Have taken to dealership to repair, but keep on not working on other doors. All 4 door handles have been replaced and now they're starting to not work again.

   NHTSA complaint 11765139
6. Filed Sep 17, 2026Failure Sep 17, 2026Lincoln, NEElectrical system

   Both front doors will no longer open from the outside. The button on the inside of the door handle doesn't respond when pushed and that is the only way to get in the car without rolling the windows down or using the emergency key. I've seen many other forum posts about this so it seems to be a pretty widespread issue across other models with the same electric door opener mechanism.

   NHTSA complaint 11764894
7. Filed Aug 31, 2026Failure Jul 7, 2026Old bridge, NJElectrical system, Body

   All four exterior door handles on my 2021 Cadillac CT5 have experienced the same intermittent failure. The handles initially work intermittently and then become unable to release the door. This has occurred on all four doors. This creates a serious safety concern because occupants may be unable to enter or exit the vehicle normally, and emergency responders may be unable to access occupants through the affected doors. This appears to be a systemic defect affecting multiple CT5 vehicles, rather than an isolated component failure.

   NHTSA complaint 11761126
8. Filed Aug 28, 2026Failure Jun 18, 2026Willow Park, TXPower train

   The pump gear on the transmission went out during normal driving with only having 30,000 miles on it. I am told my numerous people that the Gm 10 speeds always have issues with them.

   NHTSA complaint 11760237
9. Filed Aug 8, 2026Failure Jul 17, 2026Spencer, NYBody

   The door opening mechanism has failed on the drivers outside door handle. It locks and unlocks fine but it will not open. I can use an alternative by the getting the emergency access key out of the fob and popping off the handle and open with that key. Or I can go in thru another door and open it from inside or somehow open all the windows using the fob with some kind of press this and that at the same time, and access inside handle thru the window. This becomes a safety concern because I'm usually alone, and this makes me vulnerable when I have to get into the car. Especially in parking lots and garages or gas stations, or anytime there may be a situation where a quick get out of there may be required. I have been visiting the Cadillac forums and have heard many of this same complaint in the on-line discussions. Many of the complaintants have recommended to report the as a safety concern. There is no warning of this in the systems, nor is there any information coming from Cadillac about resolving this problem in the

   NHTSA complaint 11755622
10. Filed Jul 7, 2026Failure Jul 6, 2026Bradenton, FLBody

    All 4 of my door handles suddenly stopped working and they will start working from time to time. Most of the time it’s 3-4 days where i cant open my door’s from the outside. I have looked into this and have found that MANY other CT5 users have had the same experience where they are unable to open their doors from the outside, most stating that it could be the door actuator. Others stating they have taken their vehicle in and have been quoted up to $4,000 to do the repair on something we shouldn’t have to worry about. Getting into our own vehicles? we shouldn’t have to be worrying about not being able to open our doors because of a faulty door actuator. I believe this should be recalled so no one has to worry about the safety of needing to get into our vehicles quickly or in case a child closes the doors oj themselves and we are unable to open the doors to get the out. Please look into all the complaints about this matter and consider making everybody’s experience a better one and not one where our doors will one day suddenly go out and stop working.

    NHTSA complaint 11748689
11. Filed May 18, 2026Failure Mar 25, 2026Katy, TXElectrical system

    We own a 2021 Cadillac CT5 that we bought used in 2024 from Sewell Cadillac in Houston, Texas. During our first year of ownership, and while still under warranty, we started having intermittent issues with the rear doors. At times, one or the other rear doors would only open from the inside of the vehicle. My wife mentioned it to the dealer when the car was in for other issues, but because we couldn’t reproduce it at the dealership, nothing came of it. Then in March of this year, both rear doors completely failed. Neither rear door will open from the inside or the outside, and they are still that way today. We took the vehicle back to the dealer, and they performed a software update and sent us a service video. In that video, the technician described the issue as “weird” and not something they had seen before. After a couple of days, the dealer came back and said both rear exterior door handles need to be replaced, with a repair quote of $3,950.49 (for their trouble, they also charged us $265.00 to diagnose the issue). What really shocked me was that, because neither rear door will release from inside or outside, their quote indicates they would have to cut through the interior door panels just to open the doors and perform the repair. The more I researched this, the more it became clear that this problem is not “weird” at all — it appears to be a frequent issue with the CT5, with multiple owners describing similar door-handle failures and forum discussions suggesting it may be a well-known weak point rather than an isolated event. We frequently transport our granddaughter in this vehicle and that can't be accommodated until the issue is resolved with Cadillac. I don't think I can even imagine all of the potential safety implications of this type of failure should this have happened when anyone, much less a child. They would be trapped in the rear seat of the vehicle and possible strapped to a car seat. I can't imagine a better case for a recall, honestly.

    NHTSA complaint 11738510
12. Filed Apr 1, 2026Failure Dec 1, 2025Strongsville, OHElectrical system

    The door(s) would not open from the outside. I had the driver side door handle replaced first - took weeks for the part to come in - this was a safety issue because I had to climb through the passenger side to open the driver side door. (the key entry would not work either) After weeks, and me paying for it, the same thing happened to the rear driver side door. I went to open it to get my grandchild out and couldn't. Again this is a safety issue. What if I needed him out in an emergency and I couldn't. I had to walk around and get him out of the car on the other side. Now my passenger door is broke. This is a big concern, which I let the dealership know about, the safety if you can't get someone out of a car or just getting in your car - a person is vulnerable to outside elements/surroundings. The dealership has said this is a very common problem with this make/model. If "very' common it should be recalled. They shouldn't be waiting for something bad to happen prior.

    NHTSA complaint 11728484
13. Filed Feb 24, 2026Failure Jan 1, 2026Beaumont, TXElectrical system

    I've had my driver side door handle switch replaced beacuse it was faulty and I could not get into my car through the driver side. Now I am having the same issue with the passanger side. In a case of an emergeny if I can not get into my car I fear for my or my passanger's safety. I fear the quality of the parts are not ment to last. I replaced the driver side handle right before the manufactur warreny ran out then the passanger door stopped working when the warrenty ran out.

    NHTSA complaint 11720298
14. Filed Feb 12, 2026Failure Aug 6, 2025Palmdale, CAEngine, Unknown or other, Wheels

    While driving on a very busy highway going downhill when suddenly the vehicle started feeling abnormal like it was going to turn off automatically, heard an abnormal grinding noise coming from the engine the vehicle dropped speed drastically and the check engine light turned on , luckily we were on a part of the road where I merged quickly to the side of the road followed by a sudden engine shut down, the safety of myself and 3 other passengers was very compromised due to nearly being hit by other vehicles coming at a high speed on a main highway when my vehicle suddenly slowed down coming to a shut down due to the engine failure, I attempted to turn the car on again but would not turn on, was not getting any response at all, had to get the car towed, the vehicle did not have other warning lights before the failure, the check engine light came on after the engine failed, the vehicle was taken to an authorized Cadillac dealer where the engine was diagnosed as Engine seized, locked up and will not turn over. I received a Recall regarding Momentary Wheel Lock-Up which leads me to believe that might be related to what happened to my vehicle but did not have 8K dollars for a teardown to further inspect the root cause of my engine failure and definitely did not have over 11K dollars for a new engine/labor cost. The Cadillac dealer was quick to deny the possibility to be related to the recall without even doing a teardown of engine also the dealer denied the option to work on the recall repair due to the vehicle being inoperable.

    NHTSA complaint 11717706
15. Filed Feb 5, 2026Failure Jan 14, 2026Saline, MIBody

    Exterior driver side door handle will not open the door causing issues with ingress into vehicle.

    NHTSA complaint 11715761
16. Filed Jan 16, 2026Failure Jan 16, 2026Somerset, MAElectrical system

    The passive door locks on the handles to the car do not work. The electronic sensor to unlock the car does not work due to misalignment of the pin that is supposed to press the key. This is a widely known issue on 2020-2021 Cadillac ct5 vehicles. This eventually results in total lockout of the vehicle. I currently have three doors that do not unlock. Please see a link to the issue I reported on Cadillacs form website as well https://www.cadillacforums.com/threads/door-handle-issues.1141023/?nested_view=1#post-18436706

    NHTSA complaint 11711339
17. Filed Aug 19, 2025Failure Jul 30, 202548,600 milesCoral Springs, FLPower train

    The contact owns a 2021 Cadillac CT5. The contact stated that while driving approximately 42 MPH – 66 MPH, the vehicle was shaking abnormally. The contact stated that while driving at an undisclosed speed, the vehicle jerked and shuddered while shifting gears. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 48,600.

    NHTSA complaint 11681668
18. Filed Aug 12, 2025Failure Jan 15, 2023Defuniak Springs, FLElectrical system

    The exterior door handle latch release switch fails to open the door. This issue happened to all 4 exterior doors. The problem starts with intermittently, then progresses to complete failure. Once it fails, the entire door handle needs to be replaced. If all 4 doors fail, the only way to access the car is with the Emergency Key or if you activated the Remote Window Down. This only works if you have access to the key. If you left your keys in the car, the car would lock (even if running) then your only option is to fiddle with the switch in hopes of activating it or crawl through the trunk (if you're small enough). If an infant or a pet is in the car, then that could lead to problems. Also if you pass out and emergency responders came out, they would have to break the window or pry the door open to gain access, which could pose a life or death situation. This is a well documented issue with this car per the Cadillac Forums. I replaced both the front door handle assemblies to repair the main access to the car. The rear handles are still inoperable. During inspection of the Handle Electronic assembly, it appears that the switch isn't fully seated against the circuit card, which causes the solder connection on the circuit card to fail.

    NHTSA complaint 11680213
19. Filed Aug 12, 2025Failure Aug 15, 2024Defuniak Springs, FLFuel/propulsion system

    Car interior smelled like gas when the car is started. but seemed to clear while driving. Found that the Fuel hose between the pipe and the fuel intake was leaking when the car initially started. You could smell the odor when the hood was raised. This is the Pipe and Hose that you need the Fuel clamp removal tool for that is located in the rear center of the engine just in front of the firewall. The leak was about 3 inches from then end where it connected to the engine. Currently I have a temporary repair on it (Fuel coupling) where the hole was. Note, This car is out of warranty. It has been to the dealership (Step One Cadillac in Ft. Walton Beach, FL) for other recalls, but the dealership did not mention any issues.

    NHTSA complaint 11680204
20. Filed Aug 10, 2025Failure Jan 10, 2025Willow Grove, PABody

    Beginning of 2025 my drivers side door handle would not open from the outside of the car only the inside . I took it to a certified Cadillac dealer which they had to replace the door handle . Now July 10, 2025 my front passenger side is doing the same thing and I will not have to take my car in to see if they can fix it or it this too will need to be replaced. This causes a hazard of emergency no one would be able to open the door from outside of the vehicle .

    NHTSA complaint 11679649